Class: Ucode::Audit::Extractors::Hinting

Inherits:

Base

• Object
• Base
• Ucode::Audit::Extractors::Hinting

Defined in:

lib/ucode/audit/extractors/hinting.rb

Overview

Hinting summary: TrueType bytecode counts + gasp policy + CFF stem count, with derived is_unhinted and hinting_format fields.

Returned fields:

hinting: Models::Audit::Hinting instance, or nil for Type 1

The fpgm/prep/cvt/gasp tables have no BinData classes yet — they are read as raw bytes from font.table_data. Bytecode is one byte per instruction; cvt is an array of FWord (int16), so the entry count is bytesize / 2.

Constant Summary

HSTEM =

Raw CFF / CFF2 charstring operator bytes that declare stem hints.

1

VSTEM =

3

HSTEMHM =

18

VSTEMHM =

23

HINTMASK =

19

CNTRMASK =

20

Instance Method Summary

• #extract(context) ⇒ Hash{Symbol=>Object}

Instance Method Details

#extract(context) ⇒ Hash{Symbol=>Object}

Parameters:

• context (Ucode::Audit::Context)

Returns:

• (Hash{Symbol=>Object})

# File 'lib/ucode/audit/extractors/hinting.rb', line 31

def extract(context)
  font = context.font
  return { hinting: nil } unless sfnt?(font)

  { hinting: Models::Audit::Hinting.new(**gather(font)) }
end